https://www.psrinfo.com/
IBM Business Mainframes | IBM Mainframe Managed Services
Apr 3, 2025 - IBM z Systems experts since 1981, PSR offers mainframe solutions, hosting, disaster recovery, and systems programming to optimize enterprise performance.
mainframe managed servicesibmbusinessmainframes
https://www.comarch.fr/comarch-ict/mainframe/
Comarch Managed Mainframe Services
Le Mainframe est toujours considéré comme une plateforme de premier plan pour supporter des systèmes informatiques complexes...
managed mainframecomarchservices